Earth-scraper



(No ModeL) W. T. McLEAN;

Earth Scraper.

No. 242,348. Patented May 31,1881.

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UNTTED STATES PATENT QEEIcE,

WILLIAM T. MCLEAN, O1 SIDNEY, OHIO.

EARTH-SCRAPER.

SPECIFICATION forming part of Letters Patent No. 242,348, dated May 31,1881.

Application filed December 10,1880,

To all whom it may concern:

Be it known that I, WVM. T. MCLEAN, of Sidney, in the county of Shelbyand State of Ohio, have invented a new and useful Improvement inEartlrScrapcrs; and I do hereby declare the following to be a full,clear, and exact description of the same.

My invention is an improvementin thatclass ot' earth-scrapers the bodyof which is made of thin sheet-steel with wooden back-beard, theloweredge of which has always heretofore been secured to the scraper bymeans of rivets passing through the bottom of the scraper in such amanner that the rivet-heads soon wear off by abrasion and let theback-board loose, which wholly disables the scraper for further useuntil repaired. Thusit will be seen that the means heretofore employedfor securing the backboard to the bottom of the seraperare veryobjectionable.

lllyimprovement consists in the construction and arrangement of thedevices for more perfectly securing the wooden back to the steel bodywithout the use ol'said rivets, as and for the purposes hereinafter morefully described.

In the accompanying drawings, forming a part of this specification,Figure 1 is a rear view of the scraper, and Fig. 2 a longitudinalsection of the same.

A is the body, made of thin sheet-steel bent so as to form a convexbottom, and the sides bent up with a curve, in such a manner as to formnearly a quarter-circle between the convex bottom and the verticalsides.

B is the back-board.

D D is a double tie-rod passing through the upper part of the verticalsides, as shown in the drawings, and so constructed and arranged withscrew-nuts and yoke as to form a loop at each side of the scraper toembrace the bandles E E, and through the medium of said handles pressthe sides ofthe scraper firmly against the backdooard for the purpose ofholding the (No model.)

handles, the sides of the scraper, and the upper part of the back-boardall rigidly to place.

F F are the vertical brace-straps riveted to the back-board, saidbrace-straps being .bent so as to form loops, through which the tie-rodspass.

(3 is a tie rod, placed near the low er edge of the back-board, witheach end passing through the sides of the scraper at or near the upperpart of the curve or quarter-circle in the sides. This tie-rod is alsoprovided with screw-nuts at each end, which bind the sides oftheflexible body against the back-board in such a manner as to hold thelower part of the back-board rigidly in place without the use of rivets.

In more clearly (lefiningmy claim, I willsay I do not claim the tie-rodG as new; butwhen placed near the lower edge of the back-board andpassed through the sides of the scraper at or near the upper part of thecurve, as hereinbet'ore described, it has a special function, in

that it holds the lower part of the back-boardrigidly in place withoutthe use of rivets, and also allows the backboard to be easily dupltcated when worn out or broken, by taking out the tie-rods and insertinga new one, all of which can be accomplished simply by the aid ofascrew-wrench.

Having thus described my invention, what I claim as new, useful, andvaluable, is-

In combination with the scraper A, backboard B, double tie-rods D D, andbrace-straps FF, the tie-rod (J, when located near the lower edge of theback-hoard and passed through the sides of the scraper at or near theupper part of the curve or quarter-circle, for the purpose of holdingthe lower part of the back-board in its place without the use of rivets,substan tially as and for the purpose specified.

WM. T. MOLEAN.

Witnesses:

HOWARD TAYLOR, J. F. G. MOEHRING.

